Of course, Yao K. is now furious, but Edem B. takes the opportunity to again point out a number of important precautionary measures to take when handling chemicals for storage protection Insecticides are mostly used by farmers in Africa in the from of powder, which is normally simple to handle Fumigants are strictly prohibited for private use as they could poison people. However, the trained expert Edem B. knows that the poisonous substances are often treated without due care and that improper handling can cause accidents and illness.